液体浸透測定から見た塗工層の微視的構造 - 江前敏晴のホームページ

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”, 44(3): 391-398 (1990).
(
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1.
2.
EPMA
1)
2)
Y.L.Pan 3,4)
EPMA Electron Probe of X-ray Microanalyzer

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”, 44(3): 391-398 (1990).
2-1.
1
15 2-2.
5)
3) 4)
1
200 msec. 800
2-3.
EPMA Electron Probe of X-ray microanalysis
2
Cetnar 6)
Krishnagopalan 7)
1 2 160-20%-16 120-20%-16 80-20%-1620-20%-16
Latex 20%, Rod No.16, 160 C, 120 C, 80 C, 20 C drying
EDS (Energy dispersive spectroscopy)
8)
4

, , , "
”, 44(3): 391-398 (1990).
6 EPMA
JSM-U3 EDAX711
2-4.
Lucas-Washburn
485 dyne/cm 130
(AUTOPORE9220)
3-1.
3 No.16
3-2.
2
Tollenaar 9) IGT Penetration Volumeter
2
120-20% Latex
20%, 120 C drying
100

, , , "
”, 44(3): 391-398 (1990).
0
100
100
Tollenaar 9) Penetration Volumeter
3
4
3 120
4 160
120
160
160
120
22.5
160
200 sec. 120
100 sec.
160
3-3. EPMA
EPMA
8)
4
110-10 A
100 (eV)
5-a,b,c,d
160-20%-16 120-20%-1680-20%-1620-20%-16 Latex 20%, Rod No.16, 160 C, 120 C, 80 C,
20 C drying
10002000 eV α(1482 eV)

, , , "
”, 44(3): 391-398 (1990).

, , , "
”, 44(3): 391-398 (1990).
2
EPMA
1) Hagen, K. G., Tappi 69(1): 93(1986)
2) Engstrom,G., Strom,G., and Norrdahl,P., Tappi 70(12): 45(1987)
3) Pan, Y-L., Kuga, S. and Usuda, M., Tappi 71(5): 119(1988)
4)
;
, 44(6): 271(1988)
5) Pan, Y-L., Kuga, S., Usuda, M. and Kadoya T., Tappi 68(9): 98(1985)
6) Cetnar, B. W. and Heitur, I. H., Tappi 58(9): 91(1975)
7) Krishnagopalan, A. and Simard, G. L., Tappi 59(12): 96(1976)
8) ;
, 39(5): 477(1985)
9) Tollenaar, D., “Surface and Coatings related to Paper and Wood”. Ed. Marchessault, R.H. and
Skaar, C., Syracuse University Press, 195 (1967)
10) Garey, C. L., Leekley,J.D., Hultman,R.M. and Nagel,S.C., Tappi 56 (11): 134(1973)
11) Garey, C. L., Leekley, J. D. and Hultman, R. M., Tappi 58(5): 79 (1975)

, , , "
”, 44(3): 391-398 (1990).
Table 1 Preparation conditions of hand-made coated papers
Base paper
Woodfree paper
Coating color formulation:
Kaolin clay 100 parts
Dispersant *1
0.2 parts
SB-latex *2 Refer to Table 2
Solid content 50 %
Application method: Manual coating by rod #10 and 16
Drying method:
Forced air drying
Drying temperature: Refer to table 2
Calendering:
Uncalendered
*1
:T-50 *2
: 614
Table 2 Latex contents and drying conditions
Drying temperature
Latex contents, pph
and time 22.5 20.0 17.5 15.0
160 C , 3 min. 160-22.5% 160-20% 160-17.5% 160-15%
120 C , 5 min. 120-22.5% 120-20% 120-17.5% 120-15%
160 C , 3 min. 160-20%-16
120 C , 5 min. 120-20%-16
80 C , 5 min. 80-20%-16
20 C , 20-20%-16

, , , "
”, 44(3): 391-398 (1990).
Table 3 Physical values of paper samples
Sample name
Basis weight,
g/m 2
Coat weight, Thickness,
g/ m 2 µm
Base paper 64.2 - 83.3
160-22.5%
120-22.5%
20-22.5%
80.2 16.0 93.9
Smoothness,
s
41.0
Felt side
160-20%
120-20%
20-20%
160-17.5%
120-17.5%
20-17.5%
160-15%
120-15%
20-15%
79.4 15.2 94.3
80.6 16.4 95.4
81.1 17.9 95.4
160-20%-16 86.3 22.1 96.7 84.5
120-20%-16 88.6 24.4 96.3 95.3
80-20%-16 85.7 21.5 95.8 112.8
20-20%-16 87.7 23.5 97.2 129.1
Table 4 Peak intensity area of each energy disperse spectrum of characteristic
X-ray in eV-counts
Energy(eV) /
Sample
Element-Line 160-20%-16 120-20%-16 80-20%-16 20-20%-16
1482 / Al-Kα 21734 23002 23792 27148
1752 / Si-Kα 23783 25399 26865 28650
4526 / Ti-Kα 1232 1424 1388 1506
8919 / Os-Lα 3062 3056 2204 1759
Table 5 Peak position of pore size distribution corresponding to each layer in ? m
Kinds of layer
Sample
160-20%-16 120-20%-16 80-20%-16 20-20%-16
Coating 0.0472 0.0395 0.0395 0.0395
Base paper 1.95 2.24 1.97 2.21

, , , "
”, 44(3): 391-398 (1990).
Detector
m
m
Aluminum
plate
Paper
sample
In
Water
Out
Amplifier
Ultrasonic
generator
Transient
memory
Recorder
Oscillator
Fig.1 Schematic diagram of the apparatus for the ultrasonic
measurement of water penetration of paper sample
Attenuation, %
Base paper
Coated paper
Contact time, s
Fig.2 Representative ultrasonic attenuation curve of coated
paper compared to that of base paper (dotted line)

, , , "
”, 44(3): 391-398 (1990).
Drying temperature = 120 ºC
Attenuation, %
17.5 %
15 %
22.5 %
20 %
Contact time, s
Fig.3 Effect of latex concentration on ultrasonic attenuation
Drying temperature = 160 ºC
Attenuation, %
17.5 %
15 %
22.5 %
20 %
Contact time, s
Fig.4 Effect of latex concentration on ultrasonic attenuation

, , , "
”, 44(3): 391-398 (1990).
160 ºC Drying
80 ºC Drying
dV/dR, ml/g·µm
dV/dR, ml/g·µm
120 ºC Drying
dV/dR, ml/g·µm dV/dR, ml/g·µm
Pore radius, µm Pore radius, µm
20 ºC Drying
Pore radius, µm
Pore radius, µm
Fig.5 Influence of drying temperature on intensity of energy dispersive spectrum of
characteristic X-ray emitted from coated paper surface.
Relative intensity, x 100 counts
Relative intensity, x 100 counts
160 ºC Drying
X-ray energy level, eV
120 ºC Drying
X-ray energy level, eV
80 ºC Drying
X-ray energy level, eV
20 ºC Drying
X-ray energy level, eV
Fig.6 Influence of drying temperature on pore distribution, dV/dR (V; pore volume R;
pore radius) vs. R measured by mercury intrusion method